Early on, SpaceX CEO Elon Musk earned a fearsome reputation for demanding the moon from his employees, many of whom worked 100-hour weeks for years. A former SpaceX executive once described the atmosphere in Musk's offices as a perpetual-motion machine fueled by an unusual mix of dissatisfaction and eternal hope. "It's like he has everyone working on this car that is meant to get from Los Angeles to New York on one tank of gas," this executive said. "They will work on the car for a year and test all of its parts. Then, when they set off for New York after that year, all of the vice presidents think privately that the car will be lucky to get to Las Vegas. What ends up happening is that the car gets to New Mexico—twice as far as they ever expected—and Elon is still mad! He gets twice as much as anyone else out of people."